LF: Top loaded spiral 137kHz vertical (G3NYK/EI0CF and others)

To:	"[email protected]" <[email protected]>
Subject:	LF: Top loaded spiral 137kHz vertical (G3NYK/EI0CF and others)
From:	Laurence KL7 L <[email protected]>
Date:	Thu, 18 Jun 2015 13:46:49 -0800
Importance:	Normal
Reply-to:	[email protected]
Sender:	[email protected]

I think someone was asking about these a while back. Just found an old file of the variant installed in a small residence garden back in 2005 for WD2XDW in Oklahoma

This was made up of parts from Green fiber Military poles and similar parts for camo supports etc. Standlone it worked, but worked a lot better with a few more top cap wires. Self resonance was about 185kHz from memory...

I used Alans NYK design for finding the C and Rtot passive bridge http://www.xeropage.co.uk/g3nyk/aelossbr.htm

http://kl7l.com/top load.png

Laurence KL7L

<Prev in Thread]	Current Thread	[Next in Thread>
LF: Top loaded spiral 137kHz vertical (G3NYK/EI0CF and others), Laurence KL7 L <=

Previous by Date:	Re: LF: MF propagation over sea water, DK7FC
Next by Date:	Re: LF: Re: USB stereo soundcard, CHEAP!? Arrived, running, measurements..., DK7FC
Previous by Thread:	LF: MF propagation over sea water, DK7FC
Next by Thread:	LF: LF activity 22 june, Alex K
Indexes:	[Date] [Thread] [Top] [All Lists]